Solutions by everydaycalculation.com
1st number: 2/20, 2nd number: 2 0/20
220 - 4020 is -1910.
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Related: 4/20-40/20 2/20-80/20 2/40-40/20 6/20-40/20 2/60-40/20 2/20-40/60 10/20-40/20 14/20-40/20
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